We are continuing to examine every aspect of Mr. Avery’s case and all of his legal options. We are confident Mr. Avery’s conviction will be vacated when we present the new evidence and results of our work to the appropriate court.

She re-stated her confidence in the below post to her nearly 40,000 Twitter followers:

Of course, it's certainly possible that Zellner indeed has solid evidence that could potentially exonerate Avery and she's keeping it mum as she builds her case. She has an impressive reputation and it's unlikely that she would jeopardize it by publicly making claims about evidence and then ultimately failing to present them.

According to NBC Chicago, the Zellner Law Firm stated that it is "looking forward to adding Mr. Avery to its long list of wrongful conviction exonerations." The network also noted that details about how the firm plans to move forward with the case are not currently available. However, that's not especially surprising — Zellner officially announced her involvement on Jan. 8 and it will undoubtedly take a long time to build a strong case.

On Jan. 29 Zellner went on Dateline and when she was asked if she does, in fact, have new evidence, she responded: "We do. I can tell you that, generally, since 2007 there have been significant advances in forensic testing," Zellner said. "We'll do everything necessary that's forensically available ... There was a lot of evidence that wasn't tested [back then]." She also explained that she bought a Toyota Rav4 — the same year and model of victim Teresa Halbach's — to examine the hood latch, battery cables, and more, to find out if the police's story holds up.

The Manitowoc County police department denies any wrongdoing and is not under investigation for any crime.

Only time will tell if there's enough previously undiscovered evidence to move forward with a new trial for Avery. But, based on Zellner's track record, if the evidence truly exists she will find it and build a strong case for her client.